The 81cm tall US actor known for playing Mini-Me in the spoof spy movies died on Friday, according to a statement on his social media accounts.

Troyer had openly struggled with alcoholism and had been admitted to hospital in Los Angeles earlier this month. His cause of death is not yet clear.

"Verne was the consummate professional and a beacon of positivity for those of us who had the honour of working with him," said Myers, co-creator and star of the Austin Powers films.

"It is a sad day, but I hope he is in a better place. He will be greatly missed."

The statement announcing the US actor's death did not state a cause, but mentioned depression and suicide and described the actor as a "fighter" who was unable to overcome his latest battle.

"Verne was an extremely caring individual. He wanted to make everyone smile, be happy, and laugh," it read.

"Verne was also a fighter when it came to his own battles. Over the years he's struggled and won, struggled and won, struggled and fought some more, but unfortunately this time was too much.

"Depression and suicide are very serious issues. You never know what kind of battle someone is going through inside. Be kind to one another. And always know, it's never too late to reach out to someone for help."